- January 16: Martin Luther King Jr. Day
- February 20: Presidents’ Day
- April 15-16 and 22-23: Weekends of National Park Week
- August 25: National Park Service Birthday
- September 30: National Public Lands Day
- November 11-12: Veterans Day Weekend
You can find a list of Minnesota national parks here. (The one that normally charges a fee is Pipestone National Monument in the northwest corner of the state.)
Learn more on the National Park Service website!